<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript">
        console.log(!!1,!!'asd',!!null,!!'qwe');
        var var_01=1&&true&&'asd'&&'qwe';
        console.log(var_01);
    </script>
</head>
<body>

</body>
</html>